QHY533C 14-bit Colour Cooled CMOS Camera


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SKU: 110101


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    QHY533C 14-bit Colour Cooled CMOS Camera


    Model QHY533C
    COMS Sensor SONY IMX533 C
    Mono/Color Color
    Pixel Size 3.76um x 3.76um
    Effective Pixel Area 3008*3028 (includes the optically black area and overscan area)
    Effective Pixels 9MP
    Sensor Size 1 inch
    A/D Sample Depth


    Native 14-bit A/D
    Full Well Capacity (1×1, 2×2, 3×3) 58ke-

    QHY533 Colour


    One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels like the QHY533 Colour. In a typical front-illuminated sensor, photons from the target entering the photosensitive layer of the sensor must first pass through the metal wiring that is embedded just above the photosensitive layer. The wiring structure reflects some of the photons and reduces the efficiency of the sensor.

    In the back- illuminated sensor the light is allowed to enter the photosensitive surface from the reverse side. In this case the sensor’s embedded wiring structure is below the photosensitive layer. As a result, more incoming photons strike the photosensitive layer and more electrons are generated and captured in the pixel well. This ratio of photon to electron production is called quantum efficiency. The higher the quantum efficiency the more efficient the sensor is at converting photons to electrons and hence the more sensitive the sensor is to capturing an image of something dim.


    QHY533 Colour

    TRUE RAW Data

    In the DSLR implementation there is a RAW image output, but typically it is not completely RAW.  Some evidence of noise reduction and hot pixel removal is still visible on close inspection.  This can have a negative effect on the image for astronomy such as the “star eater” effect.  However,  QHY Cameras offer TRUE RAW IMAGE OUTPUT and produces an image comprised of the original signal only, thereby maintaining the maximum flexibility for post-acquisition                                                            astronomical image processing programs and other scientific imaging applications.


    QHY533 ColourAnti-Dew Technology

    Based on almost 20-year cooled camera design experience, The QHY cooled camera has implemented the fully dew control solutions. The optic window has built-in dew heater and the chamber is protected from internal humidity condensation. An electric heating board for the chamber window can prevent the formation of dew and the sensor itself is kept dry with our silicon gel tube socket design for control of humidity within the sensor chamber.



    In addition to dual stage TE cooling, QHYCCD implements proprietary technology in hardware to control the dark current noise.

    Amplify Control

    Compare last generation’s astrocam for beginners, like QHY183 or QHY 163, QHY533M has much better amplify control.

    QHY533M Dark Frame, 300s

    QHY183M Dark Frame, 300s

    QHY533M Dark frame

     600s, with highest gain (170) and strech–only very slight amplify can be detected at the corner.



    Model QHY533M QHY533C
    COMS Sensor SONY IMX533 M SONY IMX533 C
    Mono/Color Mono Color
    Pixel Size 3.76um x 3.76um
    Effective Pixel Area 3008*3028 (includes the optically black area and overscan area)
    Effective Pixels 9MP
    Sensor Size 1 inch
    A/D Sample Depth


    Native 14-bit A/D
    Full Well Capacity (1×1, 2×2, 3×3) 58ke-
    Full Frame Rate USB3.0 Port:
    Full Resolution  26.5FPS  @8BIT         20FPS @16BIT2160Lines          37FPS     @8BIT          28.5FPS@16BIT1080Lines          71.5FPS   @8BIT          55FPS @16BIT768Lines             97FPS      @8BIT          76FPS @16BIT480Lines             152FPS    @8BIT          117FPS @16BIT240Lines             280FPS    @8BIT         215FPS@16BIT
    Readout Noise 1.3 to 3.4e-
    Dark Current -20C,0.0005e- /pixel/sec
    Exposure Time Range 30us-3600sec
    Unity Gain 68
    Shutter Type Electronic Shutter
    Computer Interface USB3.0
    Built-in Image Buffer 1Gbyte DDR3 Memory
    Cooling System Two-stage TEC cooler

    Less than 1S lower than ambient temperature -30C in continuous mode

    More than 1S continuous mode or lower than ambient temperature -35C in single frame mode

    (Test temperature +20°)

    Optic Window Type AR+AR High Quality Multi-Layer Anti-Reflection Coating
    Anti-Dew Heater Yes
    Telescope Interface Support M48 (with adapter)
    Back Focal Length Actual Back Focal Consumed: 14 mm (Combined with CFW)

    Standard BFL: 17.5mm(±0.5)

    Weight 845g 845g

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